From my experience the taller they are the easier and safer it is to toss.
The hardest toss is when there is a big difference in height of the jumpers.
The most dangerous jump is when you have that mis-match and the shorter player winds up to get up there...the older guys do that too, so beware those over 40 leagues.
I have been kicked before...which is why any one-hand tosser should keep the other one down south, Rita that's optional for the ladies.
The worst I have been hit was in a mens league and this guy caught me about 3 inches below my elbow, right on the not-so-funny bone. I had a burning sensation in my middle finger through my pinkie on that hand for 2 days...of course all these guys did was shoot threes all night...try marking a 3 when you have a stinger.